由题意知4/9-x=1/6移项x=4/9-1/6通分x=8/18-3/18 x=5/18检验4/9-5/18=3/18=1/6解得x=5/18
解方程:4/9-x=1/6-x=1/6-4/9-x=-5/18x=5/18
4/9-x=1/6 x=4/9-1/6 x=5/18